http://www.realmath.de/english/integers/basics/opposite01.html

This activity is a great tool for Pre-Algebra to Algebra classes. This hands-on technological tool introduces the concept of negative numbers and their relationship to whole numbers (or integers). By using a number line and mobile tabs, the student and manipulate the tabs to see the relation and the meaning of the opposite (or negative) number. This tool could benefit those students that struggle with the conceptual understanding of negation as it refers to the properties of addition, subtraction, multiplication, and division. This includes but is not limited to their misrepresentation of signs and their correct operation. Also, it help students better understand the meaning behind negative numbers. This would be beneficial when students start working with formulas that have the opposite property embedded within it, such as the quadratic formula ("-b" in the quadratic formula means the opposite of "b" and not negative "b"). This website is a great website that will facilitate the proper basic components a student need to understand numbers and their operations in mathematics.

Shared by: Stephanie Bennett